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A 40-year-old woman is brought to the emergency department by a paramedic team from the scene of a motor vehicle accident. The patient was the vehicle driver at the time of the accident and was restrained by a seat-belt, and was unconscious at the scene. Physical examination reveals multiple injuries involving the trunk and extremities. However, there are no penetrating injuries to the chest. As part of her trauma workup, a CT scan of the chest is ordered. At what vertebral level of the thorax is this image most likely from?
- T4
- T1
- T5
- T6
- T8
A 3-year-old boy goes camping with his parents in the Appalachian mountains of Western North Carolina. While on the hiking trip, he is exposed to an antigen. After the exposure, this antigen is phagocytosed by an antigen-presenting cell (APC), which then travels to a lymph node and presents a peptide via MHC class II to a CD4+ T helper cell. This CD4+ T helper cell then stimulates a B cell, which proliferates and differentiates to produce antibodies to target the antigen. In which of the following numbered sections of the lymph node does this B cell differentiation and proliferation most likely occur?
- 1
- 2
- 3
- 4
- 5
A 40-year-old woman is brought to the emergency department by a paramedic team from the scene of a motor vehicle accident. The patient was the vehicle driver at the time of the accident and was restrained by a seat-belt, and was unconscious at the scene. Physical examination reveals multiple injuries involving the trunk and extremities. However, there are no penetrating injuries to the chest. As part of her trauma workup, a CT scan of the chest is ordered. At what vertebral level of the thorax is this image most likely from?
- Ventricular depolarization
- Period between ventricular depolarization and repolarization
- Ventricular repolarization
- Atrial depolarization
- Atrial repolarization
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